kernel/linux.git/tools/perf/tests/util.c, branch v6.19.11

perf util: add a basic SHA-1 implementation

2025-06-26T17:51:40+00:00

SHA-1 can be written in fewer than 100 lines of code. Just add a basic SHA-1 implementation so that there's no need to use an external library or try to pull in the kernel's SHA-1 implementation. The kernel's SHA-1 implementation is not really intended to be pulled into userspace programs in the way that it was proposed to do so for perf (https://lore.kernel.org/r/20250521225307.743726-3-yuzhuo@google.com/), and it's also likely to undergo some refactoring in the future. There's no need to tie userspace tools to it. Include a test for sha1() in the util test suite. Signed-off-by: Eric Biggers Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20250625202311.23244-3-ebiggers@kernel.org Signed-off-by: Namhyung Kim

perf util: Add a function for replacing characters in a string

2023-09-12T20:32:00+00:00

It finds all occurrences of a single character and replaces them with a multi character string. This will be used in a test in a following commit. Reviewed-by: Ian Rogers Signed-off-by: James Clark Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Chen Zhongjin Cc: Eduard Zingerman Cc: Haixin Yu Cc: Ingo Molnar Cc: Jing Zhang Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Liam Howlett Cc: Madhavan Srinivasan Cc: Mark Rutland Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Will Deacon Cc: Yang Jihong Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230904095104.1162928-4-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Use perf_evsel__newtp constructor in the tracepoint tests

2012-12-10T18:11:43+00:00

Removing one trace_event__id function, not used anymore. Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-13p2ov2rg166y73j9uazukma@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Move test__open_syscall_event into separate object

2012-11-14T19:49:17+00:00

Separating test__open_syscall_event test from the builtin-test into open-syscall object. Adding util object under tests directory to gather help functions common to more tests. Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1352508412-16914-3-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo